#include "start.h"
#include "main.h"
#include "usart.h"
#include <string>

using namespace std;
void startup(void)
{
    std::string str = "hello world!\n";
    HAL_Delay(100);
    HAL_UART_Transmit(&huart1,(uint8_t *)str.c_str(),str.length(),0xff);
}